25536516 has 48 divisors (see below), whose sum is σ = 63584640. Its totient is φ = 7948800.

The previous prime is 25536479. The next prime is 25536517. The reversal of 25536516 is 61563552.

It is a super-2 number, since 2×25536516² = 1304227298836512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25536517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30390 + ... + 31218.

It is an arithmetic number, because the mean of its divisors is an integer number (1324680).

Almost surely, 2^25536516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25536516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31792320).

25536516 is an abundant number, since it is smaller than the sum of its proper divisors (38048124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25536516 is a wasteful number, since it uses less digits than its factorization.

25536516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004 (or 1002 counting only the distinct ones).

The product of its digits is 27000, while the sum is 33.

The square root of 25536516 is about 5053.3667984820. The cubic root of 25536516 is about 294.4786962989.

The spelling of 25536516 in words is "twenty-five million, five hundred thirty-six thousand, five hundred sixteen".